Project 23550 patrol ship


Project 23550 patrol ships is a class of armed icebreaking patrol ships with two vessels currently under construction for the Russian Navy at Admiralty Shipyard in Saint Petersburg, Russia. Two ships have been ordered from the Admiralty Shipyard in 2016. The ships are designed to patrol the Russian territorial waters and exclusive economic zone in the Arctic.
During the launching ceremony of the lead ship, it was announced that two additional ships of slightly revised design would be built for the Border Service of the Federal Security Service of the Russian Federation by Vyborg Shipyard.

Design

Project 23550 patrol ships have a planned displacement of 6,800 tons, a length of and a draught of. They are designed to break through ice up to thick. The ships will be equipped with two Project 03160 Raptor type military boats, a Ka-32 helicopter and small hovercraft. The core crew is planned at 60 with accommodation for an additional 50 mission specialists. Armament will include a 100 mm gun and 3M-54 Kalibr anti-ship missiles.
Project 23550 will have a diesel-electric power plant with four 3,500-kilowatt Kolomna 28-9DG generating sets consisting of 16-cylinder 10D49 diesel engines driving alternators produced by Ruselprom. In addition, the ships will have two auxiliary diesel generating sets with Kolomna diesel engines and Ruselprom alternators. While the early concept featured ABB Azipod azimuthing propulsion units, the final design has conventional shaft lines, propellers and rudders. The 6.3-megawatt propulsion motors will be produced by Ruselprom. The ships will have an endurance of 60 days and a range of.
The vessels are strengthened for navigation in ice-covered arctic seas according to the Russian Maritime Register of Shipping ice class Arc7.
Think tank Global Security pointed out several similarities between the 23550 design and Norway's Svalbard class, and Canada's Harry DeWolf class. All three class are of approximately the same displacement, capable of transitting similar depths of ice and have similar size crews, with room for mission specialist. The 23550 class is, however, much more heavily armed.

Ships